Comment by shagie

That is an interesting rabbit hole to go down...

https://news.cancerresearchuk.org/2003/10/07/fussy-eating-ma...

> Scientists at the Cancer Research UK Health Behaviour Unit, University College London, wondered if children were reluctant to eat any unfamiliar foods, or whether they were selectively rejecting certain types – perhaps those most likely to pose a threat to heath. Early in human history, the presence of toxins within many plants made eating fruit and vegetables risky for children, while meat carried a high risk of food poisoning.

That was from 2003... article from the same author in 2005: Age and gender differences in children's food preferences - https://pubmed.ncbi.nlm.nih.gov/15975175/

And the term to look for is Neophobia (related article from 2022 Neophobia—A Natural Developmental Stage or Feeding Difficulties for Children? https://pmc.ncbi.nlm.nih.gov/articles/PMC9002550/ )

> 4. Causes of Food Neophobia The source of food neophobia can be traced back to evolution when a neophobic attitude protected mammals from consuming potentially poisonous food. As an omnivorous species, to survive, humans had to distinguish between safe and poisonous food. Although this ability has lost its value today, it can still be observed in children around 2 years of age (sometimes earlier), when unfamiliar foods or foods served differently than before cause anxiety in the child, and a relative preference for familiar foods is apparent.